Mapei Ultracolor plus with flugolastic ??

[cmacd]

I would appreciate some advice please. When in Tile Giant I was advised to purchase Mapei Utracolor plus black and to use Flugolastic in place of water. It is for Startek tiles (Gulfstone black opal). HAs anyone done this or is normal water suitable for mix. I have not found any literature except for mixing flugolastic with Keracolor FF and GG. If used is it a 1:1 water replacement.

thanks
Campbell